1286 



PETUNIA 



PEUMUS 



urges all to care for each seed. Fill shallow boxes with 

 fine, light soil, say an even mixture of leaf -mold and 

 sand, and wet thoroughly by pouring on boiling water 

 to prevent trouble from insects and to heat the soil. 

 When the soil has cooled sufficiently but is still warm, 

 sow the seeds very thinly in the boxes, so that the 

 plants may be 1 in. apart. Cover seeds very slightly 



1728. Petunia hybrida (X 

 Form with short conduplicate foliage. 



with a little sifted sand, and place a piece of slate or 

 glass on top of the boxes. If the white root points of 

 germination appear before the leaves, sift on more 

 sand, and watch closely. When the small leaves ap- 

 pear, remove slats and give plenty of light, to produce 

 strong, stocky plants. The soil may now need water, 

 which should be applied very gently, that the tiny seed- 

 lings may not be displaced. Later the larger plants 

 may be transplanted from seed-boxes into other boxes 

 or pots. As the weakest plants frequently give the 

 finest blossoms, care should be taken to preserve every 

 plant until the blossoms appear. 



MRS. THOS. GOULD. 



PEUCEDANUM (ancient Greek name) . Umbelliferce. 

 There are many views as to the limits of the genus 

 Peucedanum, which is equivalent to saying that it has 

 no limits. Bentham & Hooker made it a most complex 

 group, comprising about 100 Old World and New World 

 species, and including such genera as Petroselinum, 

 Anethum, Imperatoria, Tommasinia, Pastinaca, Tied- 

 mannia, Lomatium. Coulter & Rose, the latest Amer- 

 ican monographers (Monogr. of the N. A. Umbell., U. S. 

 Dept. Agric. 1900), remove the American species and 

 accept Raflnesque's genus Lomatium. With this view 

 we agree, and the cult, species are referred to this genus 

 in the following account. For Tommasinia, verticillaris , 

 of southern Europe, offered by American seedsmen, see 



Tommasinia. For P. graveolens, which we prefer to 

 call Anethum graveolens, see Dill. 



Lomatiums are all western American plants, of about 

 60 species, growing in dry soil. They are stemless (or 

 nearly so) perennial herbs from tuberous or fusiform 

 roots, and compound (ternate, pinnate or dissected) 

 leaves. From Peucedanum the genus differs, according 

 to Coulter & Rose, as follows: "Peucedanum consists of 

 tall and branching mesophytic plants of low fertile 

 meadows of the Old World, with several umbels, coni- 

 cal stylopodium, and solitary oil tubes; while Lomatium 

 consists of low xerophytic plants of acaulescent habit 

 belonging to the arid regions of western North Amer- 

 ica, with usually single umbels terminating simple 

 elongated peduncles, no stylopodium, and often several 

 oil tubes." Horticulturally, the Lomatiums are of small 

 value, and they have not been cultivated sufficiently to 

 have given rise to cultural forms. A few of the species 

 have been offered by dealers in native plants. They 

 seem to thrive well in dry, exposed places. They are 

 interesting for the front row of hardy borders and for 

 colonizing in wild open places, and for use in rockwork. 



A. Peduncles usually slender, never swollen at the top. 



B. Bractlets ot involucel conspicuous, often broad or 



united at base. 



L. dasycarpum, Coult. & Rose (Peucedanum dasy- 

 cdrpum, Torr. & Gray). Stem very short or wanting: 

 peduncles several, stout, pubescent, 2 in. or less high: 

 Ivs. rather small, pinnately decompound, the numerous 

 segments short-linear: umbel 6-15-rayed, bearing white 

 fls. : fr. nearly orbicular. Southern Calif. 



BB. Bractlets small or wanting. 

 c. Lvs. narrow in outline, pinnate. 



L. Hillii, Coult. & Rose (P. Hdllii, Wats.). Very 

 short-stemmed, the peduncles 6-16 in. tall and glabrous: 

 Ivs. oblong in outline, the segments ovate and deep- 

 toothed or pinnatifid: umbel 3-6-rayed, bearing yellow 

 fls. : fr. broadly elliptical, glabrous. Ore. and WasL. 



C. Lvs. broad in outline, 1-3-ternate. 



L. platycarpum, Coult. & Rose (P. simplex, Nutt.). 

 Often tall and stout, but sometimes nearly stemless: 

 Ivs. ternate or 2-ternate, the Ifts. almost filiform to 

 linear-lanceolate : umbel 3-15-rayed, bearing yellow fls. : 

 fr. broadly oblong to nearly orbicular, sometimes emargi- 

 nate at each end. Colo, and Utah to Mont, and Wash. 



L. triterna,tum, Coult. & Rose (P. tritemdtum, Nutt.). 

 Sometimes 2-2% ft. high: Ivs. 2-3-ternate, the Ifts. nar- 

 row-linear to linear-lanceolate: fls. deep yellow: fr. 

 narrowly oblong, glabrous. N. Calif, to B. C. 



AA. Peduncle stout, swollen at the top. 



L. nudicaule, Coult. & Rose (P. nudicaiile and P. 

 leiocdrpitm,Nutt.). Stemless, glabrous: peduncle 12-16 

 in. tall, from a long, fleshy root: Ivs. 1-2-ternate or 3- 

 quinate, the Ifts. thickish and ovate to narrow-lanceo- 

 late: umbel unequally 5-20-rayed, bearing yellow fls.: 

 fr. narrowly oblong. Calif, north and west. 



L. H. B. 



PEUMUS (said to be a Chilean name). Syn., Boldda, 

 Boldea. Monimiacece. A genus of one species, the 

 Chilean Boldo, a small tree of considerable economic 

 interest. It has exceedingly hard wood, which is used 

 for making many kinds of implements; it also makes a 

 charcoal said to be prized by smiths above all others. 

 The bark is used in tanning and dyeing. The Ivs. are 

 used in medicine. The fruits are edible; they are small 

 berries, sweet and aromatic. Finally it has some orna- 

 mental value, being evergreen and fragrant throughout. 

 The fls., which are not very showy, are white, Kin. 

 across, and borne in small panicles, each branch of 

 which is parted into three. This tree has been adver- 

 tised in southern California. The male tree has been 

 cult, under glass in Europe, but scarcely outside of 

 botanic gardens and only for its economic interest. 



Generic characters: male fls. with 10-12 perianth- 

 lobes, overlapping in 2-3 series, the outer ones herba- 

 ceous or membranous, the inner ones more petal-like; 

 disk investing the calyx-tube pilose within; stamens 

 numerous: female fls. smaller, the lobes more inequal, 



